[list!] Block vs List

Hi Patrick, PPln> What is the difference between a block and a list? From the Core Manual: Closely related data types are hash! and list!. They are used in much the same way as block values, but have special capabilities. List values are designed to handle modification of lists more quickly than block values, and hash values are designed handle data lookup and hash indexing of data. These are useful when dealing with large data sets. Lists values are not a direct substitute for blocks. There are a couple of differences between blocks and lists: Inserting into a list modifies its reference to just after the point of insertion. Removing the element currently referenced in a list causes the reference to reset to the tail of the list Also, at this time, list! is known to be subject to a couple bugs (REMOVE leaves list! at an invalid index, SORT/SKIP may crash). -- Gregg